What is it called when a song has no words just music?

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Tags

1. #instrumental
2. #lyrics
3. #along
4. #original
5. #removed
6. #instruments
7. #looking
8. #voice
9. #specifically
10. #refers
11. #played
12. #people
13. #singer
14. #usually
15. #where
16. #karaoke
17. #produced
18. #version